Superconducting vortices generated via spin-orbit coupling at superconductor/ferromagnet interfaces
Superconducting vortices generated via spin-orbit coupling at superconductor/ferromagnet interfaces
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DOI：
10.1103/physrevb.100.220505
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发表时间：
2019-12-23
影响因子：
3.7
通讯作者：
Buzdin, A., I
中科院分区：
文献类型：
--
作者：
Olthof, L. A. B. Olde;Montiel, X.;Buzdin, A., I
自旋轨道耦合（SOC）在超导体/铁磁体界面处起着重要作用。利用推广的伦敦和Ginzburg-Landau理论，我们证明了在零外加磁场下，在具有本征SOC或界面SOC的铁磁金属下的s波超导体中，SOC诱导自发涡旋.即使对于较小的SOC强度，SOC与涡旋之间的相互作用也是吸引的，SOC使涡旋沿着铁磁体的边缘钉扎，SOC增强了超导态.这种快速通信还强调了实验方案，以调查这些现象，这为Abrikosov涡记忆提供了一个平台。
Spin-orbit coupling (SOC) plays an important role at superconductor/ferromagnet interfaces. By using the generalized London and Ginzburg-Landau theories, we demonstrate that SOC induces spontaneous vortices in zero applied magnetic field in an s-wave superconductor placed below a ferromagnetic metal with intrinsic or interfacial SOC. Even for small SOC strength, the interaction between SOC and vortices is attractive, pinning vortices along the edges of the ferromagnet with the SOC reinforcing the superconducting state. This Rapid Communication also highlights experimental schemes to investigate these phenomena, which provide a platform for Abrikosov vortex memory.